Re: FAILED: patch "[PATCH] USB: serial: io_edgeport: handle unbound ports on URB" failed to apply to 4.14-stable tree

[Sasha Levin <sashal@kernel.org>]

On Sun, Jan 19, 2020 at 02:40:29PM +0100, gregkh@linuxfoundation.org wrote:
>
>The patch below does not apply to the 4.14-stable tree.
>If someone wants it applied there, or to any other stable or longterm
>tree, then please email the backport, including the original git commit
>id to <stable@vger.kernel.org>.
>
>thanks,
>
>greg k-h
>
>------------------ original commit in Linus's tree ------------------
>
>From e37d1aeda737a20b1846a91a3da3f8b0f00cf690 Mon Sep 17 00:00:00 2001
>From: Johan Hovold <johan@kernel.org>
>Date: Fri, 17 Jan 2020 10:50:23 +0100
>Subject: [PATCH] USB: serial: io_edgeport: handle unbound ports on URB
> completion
>
>Check for NULL port data in the shared interrupt and bulk completion
>callbacks to avoid dereferencing a NULL pointer in case a device sends
>data for a port device which isn't bound to a driver (e.g. due to a
>malicious device having unexpected endpoints or after an allocation
>failure on port probe).
>
>Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
>Cc: stable <stable@vger.kernel.org>
>Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>Signed-off-by: Johan Hovold <johan@kernel.org>

I also took dd1fae527612 ("USB: serial: io_edgeport: use irqsave() in
USB's complete callback") as a fix on it's own, and queued both for
4.14-4.4.

-- 
Thanks,
Sasha